Fix certificate registration procedure (#166)

start/cert.md

@@ -69,14 +69,9 @@ kind of security problem and you should repeat the steps above.
 ## Register your certificate to the ALICE Grid
 
 This operation needs to be performed only once. With Firefox, click on [this
-link](https://voms2.cern.ch:8443/voms/alice) and follow the guided procedure, after having selected
+link](https://alien.web.cern.ch/content/register-alice-virtual-organization) and follow the guided procedure, after having selected
 your personal certificate for authenticating.
 
-When the registration to the VO is successful, you will receive an email informing you. The
-registration procedure does not involve any modification or re-download of your current certificate.
-In case you are not receiving this email, you might want to ping Latchezar Betev:
-<[email protected]>
-
 
 ## Convert your certificate for using the Grid tools